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    <title>Document</title>
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    <script>
        /* 
          赋值运算符 : 把数据赋值给变量的符号
          1.=赋值 ,把后面的数据赋值为前面的变量
          2.+= -= *= /=
        */

        let num = 10;
        // num = num + 5;
        // num 自加一个值,重新赋值给自己
        num+=5;
        num-=4;
        num*=6;
        num/=23;
        console.log(num);
    </script>
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